<table>
    <tr>
        <td>用户名:</td>
        <td><input type="text" name="user_name" value="bo0123"></td>
    </tr>
    <tr>
        <td>密码:</td>
        <td><input type="text" name="user_pass" value="123456"></td>
    </tr>
    <tr>
        <input type="hidden" name="step" value="step1">
        <button type="submit">下一步</button>
    </tr>
</table>